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Goodwill, Customer Relationships and Other Intangible Assets - Goodwill Activity (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
As of December 31, 2021	$ 6,666
Effect of foreign currency exchange rate changes	(68)
As of September 30, 2022	6,598
Goodwill, accumulated impairment loss	$ 3,600	$ 3,600

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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